Patents Assigned to TBR Corporation
  • Emergency descending device
    Patent number: 5060758
    Abstract: An emergency descending device comprising a rotary wheel and a cam mounted between a pair of side plates, with a main rope passing between the rotary wheel and the cam. The rotation of the rotary wheel caused by the main rope generates a centrifugal force on a brake shoe, and the brake shoe tends to rotate a brake drum. The rotation of the brake drum rotates the cam toward the rotary wheel thereby clamping the main rope therebetween, and suitable descending speed can be obtained.
    Type: Grant
    Filed: May 18, 1989
    Date of Patent: October 29, 1991
    Assignees: TBR Corporation, Daitoh Stainless Kaihsydu Center Co., Ltd., Iida Machine Works Limited
    Inventor: Shigeo Ishioka